Aquarium filter arrangement with vibration isolation

ABSTRACT

A filter arrangement for an aquarium is disclosed. The filter arrangement can include a filter housing assembly, a pump assembly, and a transfer tube assembly. In one aspect, the housing assembly and the pump assembly are separately constructed assemblies that are connected to each other via a first dampening member to prevent vibration and sound from being transmitted from the pump assembly to the filter housing assembly. The filter arrangement can further include a second dampening member connecting the pump assembly with the transfer tube assembly to further prevent vibration and sound from being transmitted from the pump assembly to the filter housing assembly. A third dampening member can be provided at a location where the transfer tube assembly is supported within the filter housing assembly to further isolate vibration and sound from being transmitted from the pump assembly to the filter housing assembly via the transfer tube assembly.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a continuation of U.S. patent application Ser. No. 15/819,917, filed Nov. 21, 2017, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

This disclosure relates generally to methods and devices for filtering aquarium water. More particularly, this disclosure relates to a filter housing arrangement and methods related to use of the filter housing arrangement.

BACKGROUND

To maintain an ecological balance within an aquarium, it is necessary to keep the water in the aquarium clean. Cleaning is often accomplished by pumping water from the aquarium to a filter device, filtering the water through a filter medium, and returning the filtered water to the aquarium. Such filtering devices generally include an internal pump driven by an electric motor for pumping the water through the filter medium. During operation of the pump and motor assembly, vibration can result. This vibration travels from the motor to the adjoining filter components, generating an accumulation of sounds which can be transmitted through other components of the filter device and to the aquarium itself.

In general improvements in filtering devices are sought.

SUMMARY

Vibration dampeners have been designed for placement between the aquarium filter motor and all adjoining aquarium filter components. The dampeners interrupt and dissipate the oscillating energy produced by the motor. The material from which the dampening members are formed can be a soft elastomeric material so to absorb energy and dissipate as heat. In some examples, the disclosed dampening members have durometers within the range of between about 30 and 90 on an A-scale, for example a durometer of about 60.

In one aspect of the disclosure, a filter arrangement for an aquarium is presented. The filter arrangement can include a housing assembly having a filter housing defining an interior volume within which a filter cartridge is disposed and a pump assembly including a pump disposed within a pump housing having an inlet and an outlet. The filter housing is connected to the pump housing by a first elastomeric dampening member.

In some examples, the first elastomeric dampening member can include a single dampening member. In other examples, the first elastomeric dampening member can include a plurality of elastomeric dampening members.

In some examples, the elastomeric dampening member includes one or more openings for receiving attachment features of one or both of the housing assembly or the pump assembly.

In some examples, the attachment features include a plurality of support arms extending into the dampening member openings.

In some examples, the elastomeric dampening member is directly connected to a first component associated to the filter housing and is directly connected to a second component associated with the pump assembly. In some examples, the first component is a mounting member fastened to the filter housing and the second component is a cover member secured to the pump housing.

In some examples, the filter arrangement includes a transfer tube assembly operably connected to the pump assembly and a second elastomeric dampening member coupling the transfer tube assembly to the transfer tube.

In some examples, the second dampening member is configured as a tubular structure.

In some examples, the transfer tube assembly includes a tube structure extending into the filter housing, wherein the tube structure is supported by the filter housing by a third elastomeric dampening member. The third elastomeric dampening member can include a pair of rounded support members received into a recessed area of the filter housing.

In one embodiment, a filter arrangement for an aquarium includes a filter assembly including a filter housing defining an interior volume within which a filter cartridge is disposed and a pump assembly including a pump disposed within a pump housing having an inlet and an outlet, wherein the pump assembly is removably connected to the filter assembly.

In some examples, the filter assembly is connected to the pump assembly via a first elastomeric dampening member.

In some examples, the filter arrangement includes a transfer tube assembly having a tube structure with an inlet end and an outlet end, wherein the tube structure inlet end is operably connected to the pump outlet and the tube structure outlet end extends into the interior volume of the filter housing.

In some examples, the tube structure is connected to the pump assembly via a second elastomeric dampening member and is supported within the filter housing via a third elastomeric dampening member.

In some examples, the filter assembly is connected to the pump assembly via a first elastomeric dampening member and the filter arrangement further includes a transfer tube assembly having a tube structure with an inlet end and an outlet end, wherein the tube structure inlet end is operably connected to the pump outlet and the tube structure outlet end extends into the interior volume of the filter housing.

In one embodiment, a filter arrangement for an aquarium is disclosed having a housing assembly including a filter housing defining an interior volume within which a filter cartridge is disposed. The filter arrangement can include a pump assembly including a pump disposed within a pump housing having an inlet and an outlet, wherein the pump assembly is operably connected to the housing assembly via a first elastomeric dampening member. The filter arrangement can include a transfer tube assembly having a tube structure with an inlet end and an outlet end, wherein the tube structure inlet end is operably connected to the pump outlet via a second elastomeric dampening member, and wherein the tube structure outlet end extends into the interior volume of the filter housing.

In some examples, the tube structure is supported within the filter housing via a third elastomeric dampening member.

In some examples, the transfer tube assembly further includes a valve assembly for manually controlling water flow through the tube structure.

A variety of additional aspects will be set forth in the description that follows. The aspects can relate to individual features and to combinations of features. It is to be understood that both the forgoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the broad inventive concepts upon which the examples disclosed herein are based.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front perspective view of a filter arrangement in accord with the principles of the present disclosure.

FIG. 2 is a rear perspective view of the filter arrangement shown in FIG. 1.

FIG. 3 is a first side view of the filter arrangement shown in FIG. 1.

FIG. 4 is a second side view of the filter arrangement shown in FIG. 1.

FIG. 5 is a front view of the filter arrangement shown in FIG. 1.

FIG. 6 is a cross-sectional view of the filter arrangement shown in FIG. 1, taken along the line 6-6 in FIG. 3.

FIG. 6A is an enlarged portion of the view shown in FIG. 6, as indicated at FIG. 6.

FIG. 7 is a cross-sectional view of the filter arrangement shown in FIG. 1, taken along the line 7-7 in FIG. 5.

FIG. 8 is a cross-sectional view of the filter arrangement shown in FIG. 1, taken along the line 8-8 in FIG. 5.

FIG. 9 is a cross-sectional view of a portion of the transfer tube assembly of the filter arrangement shown in FIG. 1, taken along the line 9-9 in FIG. 5.

FIG. 10 is a cross-sectional view of a portion of the transfer tube assembly of the filter arrangement shown in FIG. 1, taken along the line 10-10 in FIG. 3.

FIG. 11 is an exploded perspective view of the filter arrangement shown in FIG. 1.

FIG. 12 is a front top perspective view of a filter housing of the filter arrangement shown in FIG. 1.

FIG. 13 is a bottom rear perspective view of the filter housing shown in FIG. 12.

FIG. 14 is a front view of the filter housing shown in FIG. 12.

FIG. 15 is a side view of the filter housing shown in FIG. 12.

FIG. 16 is a top view of the filter housing shown in FIG. 12.

FIG. 17 is a bottom view of the filter housing shown in FIG. 12.

FIG. 18 is a front top perspective view of a pump assembly of the filter arrangement shown in FIG. 1.

FIG. 19 is a front top perspective view of the pump assembly shown in FIG. 18, with a first housing part of the pump assembly shown as being transparent.

FIG. 20 is a front top perspective view of the pump assembly shown in FIG. 18, with a first housing part of the pump assembly shown as being removed.

FIG. 21 is a top front perspective view of a pump impeller assembly of the pump assembly shown in FIG. 18.

FIG. 22 is a top perspective view of the pump impeller assembly shown in FIG. 21, with the impeller portion removed.

FIG. 23 is a top perspective view of the impeller portion of the pump impeller assembly shown in FIG. 21.

FIG. 24 is a front view of a dampening structure of the pump assembly shown in FIG. 21.

FIG. 25 is a rear view of the dampening structure shown in FIG. 24.

FIG. 26 is a top view of the dampening structure shown in FIG. 24.

FIG. 27 is a bottom view of the dampening structure shown in FIG. 24.

FIG. 28 is a first side view of the dampening structure shown in FIG. 24.

FIG. 29 is a second side view of the dampening structure shown in FIG. 24.

FIG. 30 is a first perspective view of an attachment plate of the dampening structure shown in FIG. 24.

FIG. 31 is a second perspective view of the attachment plate shown in FIG. 30.

FIG. 32 is a front view of the attachment plate shown in FIG. 30.

FIG. 33 is a rear view of the attachment plate shown in FIG. 30.

FIG. 34 is a top view of the attachment plate shown in FIG. 30.

FIG. 35 is a bottom view of the attachment plate shown in FIG. 30.

FIG. 36 is a first side view of the attachment plate shown in FIG. 30.

FIG. 37 is a second side view of the attachment plate shown in FIG. 30.

FIG. 38 is a first perspective view of a motor cover of the dampening structure shown in FIG. 24.

FIG. 39 is a second perspective view of the motor cover shown in FIG. 38.

FIG. 40 is a front view of the motor cover shown in FIG. 38.

FIG. 41 is a rear view of the motor cover shown in FIG. 38.

FIG. 42 is a top view of the motor cover shown in FIG. 38.

FIG. 43 is a bottom view of the motor cover shown in FIG. 38.

FIG. 44 is a first side view of the motor cover shown in FIG. 38.

FIG. 45 is a second side view of the motor cover shown in FIG. 38.

FIG. 46 is a perspective view of a first dampening member of the dampening structure shown in FIG. 24.

FIG. 47 is a front view of the first dampening member shown in FIG. 46.

FIG. 48 is a first perspective view of a first housing part of the pump assembly shown in FIG. 18.

FIG. 49 is a second perspective view of the first housing part shown in FIG. 48.

FIG. 50 is a front view of the first housing part shown in FIG. 48.

FIG. 51 is a side view of the first housing part shown in FIG. 48.

FIG. 52 is a top view of the first housing part shown in FIG. 48.

FIG. 53 is a bottom view of the first housing part shown in FIG. 48.

FIG. 54 is a first perspective view of a second housing part of the pump assembly shown in FIG. 18.

FIG. 55 is a second perspective view of the second housing part shown in FIG. 54.

FIG. 56 is a front view of the second housing part shown in FIG. 54.

FIG. 57 is a side view of the second housing part shown in FIG. 54.

FIG. 58 is a top view of the second housing part shown in FIG. 54.

FIG. 59 is a bottom view of the second housing part shown in FIG. 54.

FIG. 60 is a perspective view of a transfer tube assembly of the filter arrangement shown in FIG. 1.

FIG. 60A is a cross-sectional side view of a portion of the transfer tube assembly shown in FIG. 60.

FIG. 61 is a side view of the transfer tube assembly shown in FIG. 60.

FIG. 62 is a bottom view of the transfer tube assembly shown in FIG. 60.

FIG. 63 is an exploded perspective view of the transfer tube assembly shown in FIG. 60.

FIG. 64 is a perspective view of a first tube half of the transfer tube assembly shown in FIG. 60.

FIG. 65 is a perspective view of a second tube half of the transfer tube assembly shown in FIG. 60.

FIG. 66 is a first perspective view of a valve assembly of the transfer tube assembly shown in FIG. 60.

FIG. 67 is a top view of the valve assembly shown in FIG. 66.

FIG. 68 is a front view of the valve assembly shown in FIG. 66.

FIG. 69 is a first side view of the valve assembly shown in FIG. 66.

FIG. 70 is a second view of the valve assembly shown in FIG. 66.

FIG. 71 is a cross-sectional view of the valve assembly shown in FIG. 66, taken along the line 71-71 in FIG. 67.

FIG. 72 is a first perspective view of a first valve part of the valve assembly shown in FIG. 66.

FIG. 73 is a second perspective view of the first valve part shown in FIG. 72.

FIG. 74 is a first side view of the first valve part shown in FIG. 72.

FIG. 75 is a second side view of the first valve part shown in FIG. 72.

FIG. 76 is a bottom view of the first valve part shown in FIG. 72.

FIG. 77 is a top view of the first valve part shown in FIG. 72.

FIG. 78 is a front view of the first valve part shown in FIG. 72.

FIG. 79 is a rear view of the first valve part shown in FIG. 72.

FIG. 80 is a first perspective view of a second valve part of the valve assembly shown in FIG. 66.

FIG. 81 is a second perspective view of the second valve part shown in FIG. 80.

FIG. 82 is a first side view of the second valve part shown in FIG. 80.

FIG. 83 is a second side view of the second valve part shown in FIG. 80.

FIG. 84 is a top view of the second valve part shown in FIG. 80.

FIG. 85 is a bottom view of the second valve part shown in FIG. 80.

FIG. 86 is a front view of the second valve part shown in FIG. 80.

FIG. 87 is a rear view of the second valve part shown in FIG. 80.

FIG. 88 is a perspective view of a dampening member of the transfer tube assembly shown in FIG. 60.

FIG. 89 is a top view of the dampening member shown in FIG. 88.

FIG. 90 is a cross-sectional view of the dampening member shown in FIG. 88, taken along the line 90-90 in FIG. 89.

FIG. 91 is a perspective cross-sectional view of the dampening member shown in FIG. 88, taken along the line 90-90 in FIG. 89.

FIG. 92 is a perspective view of a dampening member connecting the transfer tube assembly to the pump assembly first housing part of the filter arrangement shown in FIG. 1.

FIG. 93 is a cross-sectional view of the dampening member shown in FIG. 92.

FIG. 94 is a perspective view of an intake tube assembly of the filter arrangement shown in FIG. 1.

FIG. 95 is an exploded perspective view of the intake tube assembly shown in FIG. 94.

FIG. 96 is a perspective view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 97 is a cross sectional view of the dampening structure shown in FIG. 96.

FIG. 98 is a perspective view of a dampening member of the dampening structure shown in FIG. 96.

FIG. 99 is a cross-sectional view of the dampening member shown in FIG. 99.

FIG. 100 is a perspective view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 101 is a cross sectional view of the dampening structure shown in FIG. 100.

FIG. 102 is a perspective view of a dampening member of the dampening structure shown in FIG. 100.

FIG. 103 is a side view of the dampening member shown in FIG. 111.

FIG. 104 is a perspective view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 105 is a cross-sectional view of the dampening structure shown in FIG. 104.

FIG. 106 is a perspective view of a dampening member of the dampening structure shown in FIG. 104.

FIG. 107 is a perspective view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 108 is a cross-sectional view of the dampening structure shown in FIG. 107.

FIG. 109 is a bottom perspective view of the dampening structure shown in FIG. 107.

FIG. 110 is a perspective cut-away view of the dampening structure shown in FIG. 107.

FIG. 111 is a perspective view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 112 is a cross-sectional view of the dampening structure shown in FIG. 111.

FIG. 113 is a perspective cross-sectional view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 114 is a perspective cross-sectional view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 115 is a cross-sectional end view of the dampening structure shown in FIG. 114.

FIG. 116 is a perspective view of the dampening structure shown in FIG. 114, with the dampening member shown as being partially removed.

FIG. 117 is a perspective cross-sectional view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 118 is a cross-sectional perspective view of the dampening structure shown in FIG. 117.

FIG. 119 is a perspective cross-sectional view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 120 is an exploded perspective view of the dampening structure shown in FIG. 119.

FIG. 121 is a perspective cross-sectional view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

FIG. 122 is a cross-sectional end view of the dampening structure shown in FIG. 121.

FIG. 123 is an exploded perspective view of the dampening structure shown in FIG. 121.

FIG. 124 is a perspective cross-sectional view of an alternative dampening structure connecting the filter housing to the pump assembly that is usable with a filter arrangement of the type shown in FIG. 1.

DETAILED DESCRIPTION

Various examples will be described in detail with reference to the drawings, wherein like reference numerals represent like parts and assemblies throughout the several views. Reference to various examples does not limit the scope of the claims attached hereto. Additionally, any examples set forth in this specification are not intended to be limiting and merely set forth some of the many possible examples for the appended claims. Referring to the drawings wherein like reference numbers correspond to like or similar components throughout the several figures.

General Construction

FIGS. 1-9 illustrate a filter arrangement 10 having features that are examples of how inventive aspects in accordance with the principles of the present disclosure may be practiced. Preferred features are adapted for reducing the generation of vibration and noise emanating from the filter arrangement 10.

As shown in FIG. 1, the filter arrangement 10 generally includes a filter housing assembly 20, an intake tube assembly 40, a pump assembly 60, and a transfer tube assembly 80. When the pump assembly 60 is activated, water is drawn by the pump assembly 60 from the aquarium 12 (partially, schematically illustrated at FIG. 4) through the intake tube assembly 40 and is delivered to the transfer tube assembly 80. From the transfer tube assembly 80, the pumped water passes through a filter cartridge 24 disposed within a housing 22 of the filter housing assembly 20, and is then returned to the aquarium via a spillway 22 d formed in the housing 22. As is discussed in detail later, dampening structures are provided at the connection point between the pump assembly 60 and the housing assembly 20, at the connection point between the transfer tube assembly 80 and the housing assembly 20, and at the connection point between the transfer tube assembly 80 and the pump assembly 60. Theses dampening structures greatly reduce the transmission of vibration and sound generated by the pump assembly 60 to the housing assembly 20 directly from the pump assembly 60 and via the transfer tube assembly 80.

Filter Housing Assembly 20

As most easily seen at FIG. 9, the filter housing assembly 20 includes a housing 22, a filter cartridge 24, a bio-plate structure 26, and a removable cover 28 for accessing the interior of the housing 22. The housing 22 defines a filter chamber 22 a within the filter cartridge 24 and bio-plate structure 26 are disposed. Once installed, the filter cartridge 24 divides the filter chamber 22 a of the housing 22 into an intake chamber 22 b and a discharge chamber 22 c, as can be most easily viewed at FIG. 7. Water flow from the pump assembly 60 is directed into the intake chamber 22 b via a transfer tube 82 the transfer tube assembly 80. The water then passes through the filter cartridge 24 and into the discharge chamber 22 c. Once the water level in the discharge chamber 22 c reaches a sufficient height, the filtered water spills over a spillway 22 d. The spillway 22 d of the filter arrangement 10 is constructed to mount over an edge 12 a of the aquarium 12 so that the filtered water is directed back into the aquarium. As can be seen at FIGS. 12-17, the housing 22 also includes an aperture 22 e for receiving the transfer tube 82. The housing 22 additionally includes a receiving arrangement 22 f for enabling connection between the housing 22 and the pump assembly 60, discussed later.

Intake Tube Assembly 40

Referring to FIGS. 1-6, 11, and 94-95, the intake tube assembly 40 is shown in greater detail. In one aspect, the intake tube assembly 40 connects to a sidewall 66 c of the pump assembly second housing part 66 (discussed later) in a snap-fit manner such that water at a selected height range within the aquarium 12 can be drawn into the pump assembly 60. As shown, the intake tube assembly 40 includes a main tube 42, an extension tube 44, and a strainer tube 46. The strainer tube 46 is connected to the extension tube in a snap-fit manner and includes a plurality of openings 46 a through which water can pass into the interior of the tube 46. The extension tube 44 is slidably connected to the main tube 42 via respective cooperating features 42 a, 44 a on the main tube 42 and extension tube 44. In the example shown, feature 42 a includes a deflectable rib or protrusion and features 44 a are circumferential grooves which can receive the rib or protrusion 42 a such that the height of the strainer tube 46 can be positively indexed at a desired height within the aquarium 12.

Pump Assembly 60

Referring to FIGS. 10-36 details of the pump assembly 60 and first dampening structure 100 are shown. In the examples presented, the filter housing assembly 20 and the pump assembly 60 are separate assemblies that are connected to each other via the dampening structure 100. This arrangement allows for vibration and sounds generated by the pump assembly 60 to be isolated from the filter housing assembly 20. As the filter housing assembly 20 is directly mounted to the aquarium 12, the dampening structure 100 thus isolates vibration and sound generated by the pump assembly 60 from being transmitted to the filter housing assembly 20 and aquarium walls 12.

In one aspect, the pump assembly 60 includes a housing 62 formed by interconnected first and second housing parts 64, 66. The first and second housing parts 64, 66 can be connected together via a snap-fit type connection, or by other means such as by an adhesive or mechanical fasteners.

The first housing part 64 includes a bottom wall 64 a from which a sidewall 64 b extends to define a first interior cavity 64 c. The first housing part 64 further includes an interior sidewall 64 d and interior end wall 64 e that defines a second interior cavity 64 f within the interior cavity 64 c. The first housing part 64 additionally includes an exterior sidewall 64 g which extends through the bottom wall 64 a to an open end 64 h to form an exit passageway 64 i. In one aspect, the interior cavity 64 c of the first housing part 64 can be filled with an epoxy material to secure the magnetic drive components and related electrical components of the pump 70, discussed later.

The second housing part 66 is defined by a first sidewall 66 a defining an interior cavity 66 b and a second sidewall 66 c defining an inlet passageway 66 d into the interior cavity 66 b. The second sidewall 66 c is configured to connect with the intake tube assembly 40. When the first and second housing parts 64, 66 are connected together, the second interior cavity 64 f of the first housing part 64 opens into interior cavity 66 b of the second housing part 66. Additionally, the passageway 64 h defined by the sidewall 64 f is also open to the interior cavity 66 b of the second housing part such that a passageway is defined from the intake tube assembly 40, through the interior cavity 66 b, through the exit passageway 64 i, and into the transfer tube assembly 80 where water from the aquarium 80 can be delivered to the housing intake chamber 22 b.

The pump assembly 60 includes a pump 70 including a bracket 70 a supporting a magnetic drive part 70 b, coil (not shown), and an impeller magnet part 70 c. The impeller magnet part 70 c is coupled to an impeller 70 e such that when the impeller magnetic part 70 c rotates, the impeller 70 e rotates as well. Electrical leads 70 d extend to the control part 70 a such that the magnetic drive part 70 b can be powered to drive the impeller via the impeller magnet part 70 c.

As shown, the electrical leads 70 d, the bracket 70 a, and the magnetic drive part 70 b are housed within the first interior cavity 64 c while the impeller magnet part 70 c is housed within the second interior cavity 64 e, with the impeller extending into the interior cavity 66 b of the second housing part. Thus, when the magnet drive part 70 b is powered, the impeller 70 e rotates to draw fluid from the aquarium 80 and into the intake tube assembly 40, through the interior cavity 66 b, through the exit passageway 64 i, and into the transfer tube assembly 40.

In one aspect, a cover member 68 can be provided to enclose the interior cavity 64 c of the first housing part 64 within which the pump assembly 60 is disposed. The cover member 68 is shown in isolation at FIGS. 38-45. In the example shown, the cover member 68 is connected to the first housing part 64 via the epoxy filled into the interior cavity 64 c. The cover member 68 can be connected to the first housing part 64 by other types of connections, for example a snap-fit type connection. As shown, the cover member 68 includes a base member 68 a that has a perimeter profile that generally matches the perimeter profile of the first housing part 64 such that the cover part generally encloses the top of the interior cavity 64 c. The cover member 68 can be provided with one or more projections or extensions 68 b that extend into the interior cavity to allow the epoxy to more securely engage with and retain the cover member 68. The cover member 68 can also be provided with a collar or aperture 68 c for allowing electrical leads 70 d of the pump assembly 60 to extend out of the interior cavity 64 c.

The cover member 68 is also shown as being provided with a plurality of support arms 68 d, 68 e, 68 f that enable connection to a mounting member 69 via a dampening member 100. The mounting member 69 is directly coupled to the filter housing assembly 20 while the dampening member 100 reduces and/or eliminates vibrations and sounds generated by the pump assembly 60 from being transmitted to the filter housing assembly 20. Collectively, the cover member 68, the mounting member 69, and the dampening member 100 function as a dampening structure/assembly and connection mechanism for coupling the pump assembly 60 to the filter housing assembly 20. Thus, these components may be referred to as an independent dampening assembly 101 or as a dampening subassembly of the pump assembly. This assembly or subassembly 101 is shown in isolation at FIGS. 24-29. The vibration and sound dampening functionality of the dampening assembly or subassembly is an improvement over prior art designs in which the pump assembly and filter housing assembly are constructed as a single assembly which leaves little or no opportunity for incorporating vibration isolation measures.

As shown, a pair of support arms 68 d is provided which extend up from the base member 68 a and then extend in a direction parallel to the base member 68 a. As such, the support arms 68 d can be characterized as having an L-shape or a bent shape. The support arms 68 d further include hook or retaining portions 68 g that extend down towards the base member 68 a and function to retain the dampening member 100 on the support arms 68 d once the dampening member 100 is installed onto the arms 68 d. A third support arm 68 e is provided between the support arms 68 d and similarly extends up from the base member 68 a and then parallel to the base member 68 a, but without having a hook or retaining portion 68 g.

The support arms 68 f of the cover member 68 similarly extend up from the base 68 a, but to a larger extent with a relatively shorter portion extending in a direction parallel to the base 68 a. The support arms 68 f are also provided with a hook or retaining portion 68 h. Unlike the support arms 68 d and 68 e, the support arms 68 f are configured to engage with corresponding L-shaped or bent support arms 69 b of the mounting member 69 if necessary, but are normally spaced from the support arms 69 b such that sound and vibration transmission directly from the cover member 68 to the mounting member 69 does not occur.

Referring to FIGS. 30-37, the mounting member 69 is shown in isolation. As shown, the mounting member 69 is unitarily formed with a base member 69 a, the aforementioned support arms 69 b, and with an additional pair of support arms 69 c. The support arms 69 c extend down from the base member 69 a and then extend in a direction parallel to the base member 68 a of the cover member 68 such that the support arms 69 c are parallel to the support arms 68 d, 68 e. As such, the support arms 69 c can be characterized as having an L-shape or a bent shape. The support arms 69 c further include hook or retaining portions 69 d that extend down and away from the base member 69 a and function to retain the dampening member 100 on the support arms 69 c once the dampening member 100 is installed onto the arms 69 c. In one aspect, the base member 69 a defines a mounting surface 69 e which is formed with a curved shape that is complementary to the shape of the bottom of the housing 22 of the filter housing assembly 20 such that the mounting member 69 can be joined in a flush relationship to the housing 22, as can be most easily seen at FIGS. 7 and 8. The profile of this curve can also be observed at the top edge of the first housing part 64 of the pump assembly 60 (e.g. see FIG. 51) which allows the first housing part 64 to be flush mounted to the housing 22 of filter housing assembly. To facilitate attachment of the mounting member 69 to the housing 22, the mounting member 69 is provided with mounting holes 69 f, 69 g through which fasteners can extend into the receiving arrangement 22 f. Through this connection, the pump assembly 60 is mounted to the filter housing assembly 20, but with vibration from the pump assembly 60 being dampened by the interconnected dampening member 100.

The dampening member 100 is shown in isolation at FIGS. 46-47. As presented, the dampening member 100 is formed with a unitary construction from an elastomeric or viscoelastic polymeric material, such as plastics, rubbers, silicones, and polyurethanes. In one aspect, the dampening member 100 is provided with a main body 100 a having a plurality of openings for receiving the support arms from the cover member 68 and the mounting member 69. For example, the main body 100 a is provided with openings 100 b and 100 f for receiving the support arms 68 d and an opening 100 d for receiving the support arm 68 e. The main body 100 a is also provided with openings 100 c and 100 e for receiving the pair of mounting arms 69 b of the mounting member 69. Accordingly, any vibration or sound transmitted to the support arms 68 d, 68 e from the pump 70 is dampened by the dampening member 100 and is transmitted to a much lesser degree, if at all, to the support arms 69 b of the mounting member 69. In the embodiment shown, the opening 100 b-100 f are generally rectangular in shape (with rounded corners) and extend all the way through the main body 100 a. However, different shapes may be utilized, such as circular, triangular, and other polygonal shapes with or without rounded corners. Also, although five total openings are shown, more or fewer openings can be provided depending upon the desired number of support arms extending from the mounting member 69 and cover member 68.

The pump assembly 60 can also be provided with a dampening member 110 to facilitate the connection between the pump assembly 60 and the transfer tube assembly 80. As presented, the dampening member 110 is formed with a unitary construction from an elastomeric or viscoelastic polymeric material, such as plastics, rubbers, silicones, and polyurethanes. As described earlier, the first housing part 64 of the pump assembly 60 includes an exterior sidewall 64 g which extends through the bottom wall 64 a to an open end 64 h to form an exit passageway 64 i. This structure essentially forms a pumped fluid outlet opening to which the inlet end 82 a of a tube structure 82 (discussed later) of the transfer tube assembly 80 can be connected via the dampening member 110, as can most easily be seen at FIG. 6A. The dampening member 110 is shown in isolation at FIGS. 92-93 where it can be seen that the dampening member 110 is a tubular structure with a sidewall 110 a extending from a first open end 110 b to a second open end 110 c. The sidewall 110 a frictionally engages the sidewall 64 g at the first open end 110 b and the tubular structure inlet end 82 a at the second open end 110 c. The seals formed between the sidewall 110 a and the sidewall 64 g and tubular structure 82 may be further formed with a sealant, such as silicone or may be further effectuated mechanically, such as with a band.

In one aspect, the dampening member 110 includes an internal circumferential flange 110 d which extends radially inwardly from the sidewall 110 a. The circumferential flange 110 d extends sufficiently inwardly such that the end of the sidewall 64 g and the inlet end 82 a of the tube structure are prevented from abutting each other, and thus transmitting sound and vibration from the pump assembly 60 to the transfer tube assembly 80. Instead, the end of the sidewall 64 g and the inlet end 82 a of the tube structure 82 each abuts the internal circumferential flange 110 d where these components are inserted into the dampening member 110 to such a degree.

Taken together, the dampening members 100 and 110 operate to reduce or prevent the transmission of sound and vibration from the pump assembly 60 to the downstream related components (e.g. housing assembly 20, transfer tube assembly 80) of the filtration arrangement 10 and thus ultimately reduce or prevent sound and vibration from being transmitted to the aquarium 12 where the sound and vibration can be further amplified.

Transfer Tube Assembly 80

Referring to FIGS. 6-11 and 60-91, features of the transfer tube assembly 80 are shown in greater detail. In one aspect, the transfer tube assembly 80 includes an arc-shaped tube structure 82 extending between an inlet end 82 a and an outlet end 82 b. The tube structure 82 is primarily situated within the housing 22 and rests within a concave-shaped support channel 22 g defined within the housing 22. The inlet end 82 a of the tube structure 82 extends through the aperture 22 e of the housing 22 and is connected to the pump assembly exterior sidewall 64 g via a dampening structure 100 (discussed later). The tube structure 82 is oriented within the housing 22 such that the second end 82 b extends into the intake chamber 22 b of the housing 22, as most easily viewed at FIG. 7. Thus, the tube structure 82 allows for water pumped by the pump assembly 60 to be delivered to the intake chamber 22. The tube structure 82 additionally defines a valve cavity 82 d for housing a valve assembly 90 (discussed later) and a support structure 82 c to which dampening structures 300 (discussed later) are attached.

In one aspect, the tube structure 82 is formed by a first tube half 84 and a second tube half 86 mated to the first tube half 84. The tube halves 84, 86 can be bonded to each other by a variety of means, such as by sonic welding. Each tube half 84, 86 extends between a first end 84 a, 86 a and a second end 84 b, 86 b. Additionally, the tube half 84 includes a cylindrical sidewall portion 84 c and the tube half includes a cavity portion 86 c that cooperatively define the valve cavity 82 d. The valve cavity 82 d retains the valve body 92 of a valve assembly 90, discussed later. The tube halves 84, 86 are also provided with a recessed area 84 f, 86 f that together form a recessed portion 82 d within which a valve member 92 f of the valve body 92 resides when the valve assembly 90 is in an open position.

In one aspect, the tube half 84 is shown as including a pair of alignment apertures 84 e while the tube half 86 is shown as including a pair of alignment protrusions 86 e that are received into the apertures 86 e. These features ensure that the tube halves 84, 86 are properly aligned to each other prior to being bonded together and also aid in initial alignment during assembly. As shown, the apertures 84 e and protrusions 86 e are located proximate the valve cavity 82 c where proper alignment is generally more important. The apertures and protrusions 84 e, 86 e can also impart additional structural integrity to the tube structure 82. Other numbers, locations, and combinations of apertures and protrusions may be provided on the tube halves 84, 86 to ensure alignment. Also, other alignment features may be utilized such as elongated slots or grooves that receive cooperatively shaped protrusions.

In one aspect, the tube half 84 is additionally provided with a stop structure 88, as can be seen most easily at FIG. 65. The stop structure 88 provides for a limiting function for the positioning of the valve assembly 90 such that the valve assembly 90 can only be rotated between two end stop points. To achieve this function, the stop structure 88 is provided with a first stop surface 88 a and a second stop surface 88 b which interact with a portion of the valve assembly 90, such as an operator portion or valve body.

By providing the tube structure 82 in two halves 84, 86, the valve body 92 (discussed later) of the valve assembly 90 can be installed within the sidewall portion 84 c and cavity portion 86 c prior to the tube halves 84, 86 being joined together. Once the tube halves 84, 86 are joined together, the valve body 92 is securely retained within the valve cavity 82 c and can rotate within the valve cavity 82 c to control the volumetric flow rate of the water flowing through the filter arrangement 10. Each tube half 84, 86 also defines a support leg 84 d, 86 d which together form the support structure 82 c of the tube structure 82.

As most easily seen at FIGS. 63 and 66 to 71, the valve assembly 90 is shown in further detail. The valve assembly 90 allows for the volumetric flow rate through the transfer tube assembly 80 to be controlled manually by selectively providing resistance to the water pumped by the pump assembly 60 and passing through the tube structure 82. In some instances, it is undesirable for the filter arrangement 10 to operate at full flow capacity. For example, when food is added to the aquarium 12 it is desirable to have little or no flow through the filter arrangement to avoid the food being unintentionally drawn into the filter arrangement before it can be consumed. Also, where the filter arrangement 10 has a larger capacity than what is required for the aquarium 12 in which it is installed, the valve assembly 90 can be adjusted and set such that a desired flow rate through the filter arrangement 10 is achieved. As presented, the valve assembly 90 includes the aforementioned valve body 92, a valve operator 94, an indicator 96 attached to the valve operator 96, and a seal member 98. The valve assembly 90 is shown in isolation from the tube structure 92 at FIGS. 66-71.

Referring to FIGS. 72 to 79, the valve body 92 is shown in isolation. As presented, the valve body 92 is a unitarily formed component with a cylindrical body 92 a within which a channel or passageway 92 b is formed by sidewalls 92 c, 92 d, and 92 e. A cavity 92 g is also formed between the cylindrical body 92 a and the sidewall 92 c. The sidewall 92 c extends between the sidewalls 92 d, 92 e and extends beyond the cylindrical body 92 a to a distal end 92 f. In one aspect, the sidewall 92 c is provided with an aperture 92 h for receiving a latch member of the valve operator 96. The distal end 92 f has a radius and/or shape that generally matches the interior radius and/or shape of the tube structure 82. As constructed, the distal end 92 f of the sidewall 92 c functions as a stop or regulating member of the valve assembly 90. As such, the distal end 92 f of the valve body 92 may be referred to more broadly as a valve member, stop member, or regulating member 92 f. As can be most easily seen at FIG. 9, when the valve body 92 is rotated fully into an open flow position, the valve member 92 f resides in a recessed area 82 d of the tube structure 82. This allows water flowing through the valve assembly 90 to pass through the channel or passageway 92 b of the valve body 92 relatively unobstructed along a flow path 93. When the valve body 92 is rotated within the tube structure 82, which is about an axis that is parallel to the top of the aquarium 12, the valve member 92 f enters into the flow path 93 and provides resistance to the water flowing through the flow path 93. Thus, a desired flow rate through the tube structure 82 can be achieved by appropriately rotating the valve body 92. Although the axis of rotation of the valve body 92 is shown as being parallel to the top of the aquarium, other angles are possible.

In one aspect, the valve body 92 can be connected to and rotated via the valve operator 94. The valve operator 94 is shown in isolation at FIGS. 80 to 87. As shown, the valve operator 94 is unitarily formed with an operator portion 94 a, a pair of engagement members 94 b extending from the operator, and a connecting member 94 c also extending from the operator portion 94 a. The operator portion 94 a provides a mechanism by which an operator can manipulate the rotational position of the valve body 92 by likewise rotating the operator portion 94 a. In the example shown, the operator portion 94 a is provided with a concave shaped recess 94 h to allow a user's finger to more easily grip or engage the operator portion 94 a. Other features such as knurls and ribs may be provided for tactile purposes as well.

The extension members 94 b extend into the cavity 92 g of the valve body 92 and engage with the valve body 92 such that a rotational force applied to the operator portion 94 a is translated to the valve body 92. In one aspect, the extension members 92 b and the cavity 92 g have complimentary shapes for a relatively low tolerance engagement. The connecting member 94 c is provided with a latch member 94 d that is received by the aperture 92 h in the valve body sidewall 92 c to form a secure, snap-fit type connection.

In one aspect, the operator portion 94 a includes a first stop surface 94 e and a second stop surface 94 f that respectively interact with the stop surfaces 88 a, 88 b of the stop structure 88 on the tube half 84. These surfaces cooperate to limit the rotation of the operator portion 94 a, and by extension, the valve body 92. As such, the valve assembly 90 can be rotated to a fully open position when the operator stop surface 94 e is engaged with the stop structure end stop surface 88 a and can be rotated to a fully closed position when the operator stop surface 94 f is engaged with the stop structure end stop surface 88 b. It is noted that the fully closed position can be a position in which virtually all flow through the tube structure 82 is blocked or in which flow is restricted but still exists at some reduced rate. Additionally, it is noted that the stop surfaces 94 e, 94 f could also be provided on the valve body 92 rather than the operator 94.

The valve operator 94 can also be provided with a flanged recess 94 g for retaining the seal member 98. The seal member 98 is most easily viewed as being retained in the flanged recess 94 g at FIGS. 66 to 68. As stated, earlier, the valve body 92 is initially installed between the tube halves 84, 86 and the valve operator 94 is connected to the valve body 92 after the tube halves 84, 86 have been joined together. As such, a potential leak path exists at the location where the valve operator 94 is connected to the valve body 92. The seal member 98, configured as an O-ring, prevents such leakage by engaging with the cylindrical sidewall portion 84 c of the tube half 84 once the valve operator 94 is joined to the valve body 92.

In one aspect, the valve operator 94 is provided with an indicator 96 that enables an operator to visually observe the relative position of the valve assembly 90. In the example shown, the operator portion is provided with a recessed area 94 i for receiving the indicator 96 in a snap-fit type arrangement. The indicator 96 is most easily viewable at FIGS. 66 to 71, where it can be seen that the indicator 96 saddles each side of the operator portion 94 a and generally follows the perimeter profile of the operator portion 94 a. By providing the indicator 96 as a separate component, the indicator 96 can be more easily provided with a color that is different than the color of the operator portion 94 a. For example, the indicator 96 can be molded from a red plastic material to differentiate it from a darker color from which the valve operator 94 is molded. However, it is entirely possible to provide an indicator 96 directly on the operator portion without requiring a separate component, such as by painting. As can be seen at FIGS. 1 to 6, the operator portion 94 a of the valve operator 94 extends through an aperture 28 a of the cover 28. Thus, the position of the valve assembly 90 can be manipulated by a user without requiring removal of the cover 28. The cover 28 can also include indicia 28 b, such as “+” and “−” symbols to provide an indication to an operator as to which direction the operator portion 94 a should be moved in order to provide more or less flow. When the operation portion 94 a has been rotated to a sufficiently closed position, the indicator 96 will pass through the opening 28 a and be viewable to a user. Thus, the indicator 96 can provide a visual alert to an operator that the filter arrangement 10 is not operating at full capacity.

With reference to FIG. 60A, the operation of the valve body 92 within the transfer tube halves 84 can be most easily viewed. In FIG. 60A, the valve member 92 f is shown in an open position, as referenced at 92 f-O, and is shown in the closed position, as referenced at 92 f-C. The valve body 92 rotates between the open and closed positions about a rotational axis X1 through an angle a1. With the disclosed design, the valve body 92 and the valve operator 94 can be beneficially rotated between the fully open and closed positions with 90 degrees or less of total rotation. In the example shown, angle a1 is about 46 degrees. This relatively low value is advantageous in that an operator need not turn the operator 94 multiple times in order to move the valve body 92 between the open and closed positions. In one aspect, the rotational axis X1 is orthogonal or perpendicular to a longitudinal axis X2 (see FIG. 62) of the transfer tube assembly 80 and the constituent tube halves 84. By orienting the rotational axis X1 in such a manner, the operator 94 can be located on one side of the tube halves 84, thereby enabling the operator 94 to be placed in an ideal use for an operator.

In the example embodiments presented, the transfer tube assembly 80 can be constructed with isolation features that minimize or eliminate the transfer of vibration and sound to the housing 22 of the filter housing assembly 20. As described previously, each tube half 84, 86 of the tube structure defines a support leg 84 d, 86 d which together form the support structure 82 c of the tube structure 82. As most easily viewed at FIGS. 60-62, a dampening member 120 is inserted onto each of the support legs 84 d, 86 d. The dampening members 120, shown in isolation at FIGS. 88-91, can be formed from the same types of elastomeric materials as already described for dampening members 100, 100. Each dampening member 120 is provided with a main body 120 a defining a generally hemi-spherical or oblong rounded shape defining a recess 120 b for receiving the support leg 84 d or 86 d. In one aspect, the recess 120 b can include a further pair of recesses 120 c for receiving protrusions 84 g, 86 g extending from the opposite surfaces of the support legs 84 d, 86 d. The interaction of the protrusions 84 g, 86 g and the recesses 120 c aid in locking the dampening members 120 to the support legs 84 d, 86 d. As most easily viewed at FIGS. 9 and 10, the dampening members 120 are received within a recessed area 22 h defined in the housing 22. This configuration allows for the entire transfer tube assembly 80 to be supported by the dampening member 120 and by the dampening member 100 such that hard plastic-to-plastic contact between the transfer tube assembly 80 and the housing 22 can be avoided. Thus, any vibration or sound that is transferred to the transfer tube assembly 80 from the pump 70 is further isolated from being transmitted to the housing 22 by the dampening member 120. Furthermore, any vibration or sound generated within the transfer tube assembly 80, which is not generally expected but could potentially occur at the valve assembly 90, is also isolated from the housing.

Dampening Member Alternatives

Alternative dampening member arrangements and subassemblies are presented at FIGS. 96 to 124. For each of the alternatives, the dampening members can be formed from materials similar to those already described for dampening members 100, 120, 130 an need not be further described here. In all of the examples, the alternative dampening members operate to connect the filter housing assembly 20 with the pump assembly 60 and to isolate sound and vibration emanating from the pump assembly 60 from being transmitted to the filter housing 20.

Referring to FIGS. 96 to 99, an alternative dampening subassembly 200 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this alternative, dampening is facilitated by a pair of dampening members 202 that are formed as generally cylindrical tubular members similar to that shown for dampening member 100. In the example shown, the housing 204 (equivalent to housing 22) is formed with a pair of projections 202 a that are received by the dampening members 202 while the cover member 206 (equivalent to cover member 68) is likewise provided with a pair of projections 206 a that are received at the opposite ends of the dampening members 202. Although two dampening members 202 are provided fewer or more dampening members 202 may be provided.

Referring to FIGS. 100 to 103 an alternative dampening subassembly 210 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. This alternative is similar to that shown for dampening subassembly 210, but with differently shaped dampening members 212 and with an additional feature 216 b on the cover member 216 that retains the dampening members 212. The dampening members 212 are shown as having a greater sidewall thickness proximate a center portion 212 b, which can aid in increasing the stiffness of the dampening member 212, where desired. In the example shown, the housing 214 (equivalent to housing 22) is formed with a pair of projections 212 a that are received by the dampening members 212 while the cover member 216 (equivalent to cover member 68) is likewise provided with a pair of projections 216 a that are received at the opposite ends of the dampening members 212. The dampening members 212 are also provided with openings or apertures 212 a that receive latch-type projections 216 b (e.g. structure with ramped and shoulder portions) located on the projections 216 a. With such a feature, the dampening members 212 can be inserted and retained onto the projections 216 a such that when the housing 214 is removed, the dampening members 212 stay with the cover member 216. Although two dampening members 216 are provided fewer or more dampening members 216 may be provided.

Referring to FIGS. 104 to 106 an alternative dampening subassembly 220 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this embodiment, a central dampening member 222 is provided which has a knurled or textured surface 222 a on both sides. The housing 224 is provided with projections 224 a that receive and secure a pair of magnets 224 b while the cover member 226 is likewise configured to receive and secure a second pair of magnets 226 a. When the cover member 226 is located in proximity to the housing 224, the magnets 224 b interact with the magnets 226 a to secure the cover member 226 to the housing 224 with the dampening member sandwiched there between. Although a pair of magnets 224 b, 226 a is shown for each of the housing 224 and cover member 226, more or fewer could be provided.

Referring to FIGS. 107 to 100 an alternative dampening subassembly 230 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this embodiment, the dampening members 232 are formed as grommets with a central opening and a circumferential channel that operate to interconnect the housing 234 (equivalent to housing 22) and the cover member 236 (equivalent to cover member 68). As shown, the housing 234 is provided with a pair of projections 234 a with retaining features (e.g. latch shape with ramp and shoulder portions) that are received through the central opening of the dampening members 232 and hook onto the dampening members 232. The cover member 236 includes openings 236 a wherein the end wall defining the openings 236 a is received into the circumferential channels of the dampening members 232. FIG. 100 shows a variation 230′ wherein the dampening members 232′ are provided with a different cross-sectional profile. Although two dampening members 232 (or 232′) are shown, more or fewer could be provided.

Referring to FIGS. 111 to 112 an alternative dampening subassembly 240 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this embodiment, the dampening members 242 are formed as bands that operate to interconnect the housing 244 (equivalent to housing 22) and the cover member 246 (equivalent to cover member 68). As shown, the housing 244 is provided with a pair of projections 244 a with retaining features (e.g. flange or ledge) and the cover member 246 is provided with a pair of projections 246 a with retaining features (e.g. flange or ledge) about which the dampening members 242 are stretched. Although two dampening members 242 are shown, more or fewer could be provided.

Referring to FIG. 113 an alternative dampening subassembly 250 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. This embodiment is similar to that shown for dampening subassembly 101 in that a block-type dampening member 100 is provided that receives arms or projections 254 a extending from the housing 254 (equivalent to housing 22) and is retained by arms 256 a extending from the cover member (equivalent to cover member 68). However, the arms or projections 254 a 256 a are provided with a different shape and configuration. Notably, the arms or projections 256 a do not extend into the dampening member 252, but rather extend over the sides of the dampening member 252 such that the dampening member 252 is held between the arms or projections 256 b and the end wall 256 a of the cover member 256.

Referring to FIGS. 114 to 116 an alternative dampening subassembly 260 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this embodiment, the dampening member 262, the housing 264 (equivalent to housing 22) and the cover member 266 (equivalent to cover 68) are schematically presented. As shown, the dampening member 262 is configured with flanged end portions that are received into corresponding partially enclosed channel portions of the housing 264 and cover member 266. In the example shown, the dampening member 262 is shown in the shape of an I-beam. However, other shapes are possible.

Referring to FIGS. 117 to 118 an alternative dampening subassembly 270 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this embodiment, the dampening member 272, the housing 274 (equivalent to housing 22) and the cover member 276 (equivalent to cover 68) are schematically presented. This embodiment is similar to that shown for dampening subassembly 260 in terms of the attachment between the housing 274 and the dampening member 272, but is different in that the cover member 276 and dampening member 272 are configured for a different type of attachment shape. As shown, the cover member 276 is provided with projections 276 a that are received into flanged openings 272 of the dampening members 272 to connect the components together. This same connection arrangement can also be provided between the dampening member 272 and the housing 274. Although two projections 276 a and two dampening member openings 272 a are shown, more or fewer could be provided.

Referring to FIGS. 119 to 120 an alternative dampening subassembly 280 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this embodiment, the dampening member 282, the housing 284 (equivalent to housing 22) and the cover member 286 (equivalent to cover 68) are schematically presented. As presented, the dampening member 282 is provided as a frustoconical ring-shaped member resting between the housing 284 and the cover member 286. Any of the previously aforementioned connection approaches for connecting the dampening member 282 with the housing 284 and cover member 286. Alternatively, an adhesive could be used.

Referring to FIGS. 121 to 123 an alternative dampening subassembly 290 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In this embodiment, the dampening members 292, the housing 294 (equivalent to housing 22) and the cover member 296 (equivalent to cover 68) are schematically presented. As presented, the dampening members 292 are provided as rectangular prism-shaped members resting between the housing 294 and the cover member 296. Any of the previously aforementioned connection approaches for connecting the dampening member 292 with the housing 294 and cover member 296. Alternatively, an adhesive could be used.

Referring to FIG. 124 an alternative dampening subassembly 300 for connecting the pump assembly 60 to the housing 22 of the filter housing assembly 20 is presented. In contrast to the previous embodiments, a single dampening member 302 of this embodiment connects the filter housing 304 (equivalent to housing 22) with the pump housing first part 306 (equivalent to first part 64). As shown the dampening member 302 is formed as a generally tubular structure with barbed or hooked ends for connecting to the filter housing 304 and pump housing first part 306, each of which is configured with circumferential recesses for receiving the barbed or hooked portions. The dampening member 302 is also configured with an internal tubular portion for connecting the pump outlet with the transfer tube assembly, thus eliminating the need for a separate dampening member similar to dampening member 100.

In one aspect, the dampening members disclosed herein (e.g. dampening members 100, 120, 130, 202, 212, 222, 232, 242, 252, 262, 272, 282, 292, and 30) can be formed form a material having a durometer hardness of between 20 and 100, and more preferentially between 40 and 80, and more preferentially between 50 and 70, and more preferentially about 60. In the examples shown, the dampening members have a durometer hardness value of about 60.

From the forgoing detailed description, it will be evident that modifications and variations can be made in the aspects of the disclosure without departing from the spirit or scope of the aspects. While the best modes for carrying out the many aspects of the present teachings have been described in detail, those familiar with the art to which these teachings relate will recognize various alternative aspects for practicing the present teachings that are within the scope of the appended claims. 

The invention claimed is:
 1. A filter arrangement for an aquarium, the filter arrangement comprising: a) a housing assembly including a filter housing defining an interior volume within which a filter cartridge is disposed; (i) the housing including a first pair of projections; b) a pump assembly including a pump disposed within a pump housing having an inlet and an outlet; the pump having a cover; (i) the cover including a second pair of projections; c) first and second elastomeric dampening members connecting the filter housing to the pump assembly; (i) wherein the first pair of projections is received at one end of the first and second elastomeric dampening members, and the second pair of projections is received at an opposite end of the first and second elastomeric dampening members.
 2. The filter arrangement of claim 1 wherein the first and second elastomeric dampening members are cylindrical tubular members.
 3. The filter arrangement of claim 1, wherein the first and second elastomeric dampening members have a durometer in a range of between 30 and 90 on an A-scale, inclusive.
 4. A filter arrangement for an aquarium, the filter arrangement comprising: a) a housing assembly including a filter housing defining an interior volume within which a filter cartridge is disposed; (i) the housing holding a first pair of magnets; b) a pump assembly including a pump disposed within a pump housing having an inlet and an outlet; the pump having a cover; (i) the cover including a second pair of magnets; c) an elastomeric dampening member sandwiched between the filter housing and the cover; (i) wherein the first pair of magnets and second pair of magnets are attracted to each other to secure the elastomeric dampening member therebetween.
 5. The filter arrangement of claim 4 wherein the elastomeric dampening member has a knurled surface.
 6. The filter arrangement of claim 4, wherein the elastomeric dampening member has a durometer in a range of between 30 and 90 on an A-scale, inclusive.
 7. A filter arrangement for an aquarium, the filter arrangement comprising: a) a housing assembly including a filter housing defining an interior volume within which a filter cartridge is disposed; (i) the housing having a pair of projections; b) a pump assembly including a pump disposed within a pump housing having an inlet and an outlet; the pump having a cover; (i) the cover including an opening; c) an elastomeric dampening member having a central opening, the elastomeric dampening member connecting the filter housing and the cover; (i) wherein the elastomeric dampening member is held within the opening of the cover, and the pair of projections extends into the central opening of the elastomeric dampening member.
 8. The filter arrangement of claim 7 wherein the elastomeric dampening member comprises a grommet having the central opening and a circumferential channel.
 9. The filter arrangement of claim 7 wherein the projections each has a latch and hook received through the central opening.
 10. The filter arrangement of claim 8 wherein the cover is received by the circumferential channel of the grommet.
 11. The filter arrangement of claim 7 wherein there are two elastomeric dampening members connecting the filter housing and the cover.
 12. The filter arrangement of claim 7, wherein the elastomeric dampening member has a durometer in a range of between 30 and 90 on an A-scale, inclusive. 